A magnetic bearing system for a continuous ventricular assist device.
ASAIO J
; 45(5): 450-4, 1999.
Article
em En
| MEDLINE
| ID: mdl-10503624
ABSTRACT
This article describes a prototype continuous flow ventricular assist device (CFVAD3) supported in magnetic bearings. The VAD is a small centrifugal four bladed pump. The pump's geometry is explained. The CFVAD3 is the first compact VAD completely supported in magnetic bearings. The magnetic bearings are composed of an inlet side actuator divided into eight pole sets, and an outlet side actuator, also divided into eight pole sets. The pump operating performance was tested and found to be within the design flow rate of up to 9 L/min, and head up to 170 mm Hg for human circulatory support. Magnetic bearing operation out of center positions under various operating orientations were measured and found to be < 1/6 of the bearing clearance, well within specifications. The expected magnetic bearing power loss has been calculated at approximately 6.5 watts.
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Base de dados:
MEDLINE
Assunto principal:
Coração Auxiliar
/
Magnetismo
Limite:
Humans
Idioma:
En
Ano de publicação:
1999
Tipo de documento:
Article